+3 = 7

ㄍㄢgān

ㄍㄢgān
liver (CL:葉|叶[ye4])​, (slang)​ to put in long hours, typically late into the night, playing (a video game)​, (of a video game)​ involving a lot of repetition in order to progress; grindy
Leber (S)​
foie